Service bulletins for the 2020 Mack Anthem
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
269 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
Only bulletins with component: Software are shown. Show all
| KC-355 | 2022-02-04. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM. Diagnostic Trouble Code ( DTC ) P0422 Lighting The Malfunction Indicator Light ( MIL ) - US17 (GHG17), Common Rail Fuel System ONLY |
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The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.